SuperHero & Superstar
you will not regret either. btw, I am very similar h&W stats- 5'7 230lbs.... Both are the best boat of their category i have ever had. seriously JK are great learning boats.(pretty freaking awesome intermediate/expert boats too) easy to roll, forgiving, etc.... i think i have gone on about them once or twice here...
4fun is a great riverplay boat, i.e less aggressive beginning playboat. you will fit in that one fine.
the Monstar/superfun would be too big. JK weight categories are generous for the larger boats.
I have ended up researching all this for the last 4 years, since i got my first 4fun. switching to JK, brought my rolling back from the brink, since i was out of shape and way heavy. i have since lost 30 lbs and have never had so much fun paddling. progressing playboating, and progressing my intermediate creeking/ class IV riverrunning....
anyway, if your situation is looking for whitewater parks only .... superstar or 4fun.
Zen looks like a killer boat for downriver stuff like... the grand canyon, or any thing you dont want to playboat.
super hero is the same but slower and and shorter, which is the jammy for micro creeking (low volume small creeks.) it also packs up well for self support camping. 95 gallons, but a foot shorter then any of the big creekers. I LOVE my 2011 Superhero....
Rogue would be good for the great lakes.... and SS camping....in the grand canyon... (i sriously want to go someday soon.......)